43c59f4f7720d5da5c82b984e6141473bc7f9ad5001929b75b2e20c54a03b69a

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 22:28

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General

Target

2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe
Size

61KB
MD5

418f204f70a8d1c08398321a34dbbfd2
SHA1

2fdcd596cf2bd96515059155cf3f262f1c8349b6
SHA256

43c59f4f7720d5da5c82b984e6141473bc7f9ad5001929b75b2e20c54a03b69a
SHA512

13c4ff065e526df17e446a6a2f6809e121365a097824792bc50c44f8b869f030db65523af2dd48e46a2bd3203c8e9041adc7d31e3de72950f035c582b41fce1e
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEO10KX:6j+1NMOtEvwDpjr8ox8UDEy0KX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2304-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/2304-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1404-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2304-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral1/memory/2304-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1404-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2304-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2304-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1404-25-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1404 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe

pid process

2304 2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1404	misid.exe

pid	process
2304	2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe

description	pid	process	target process
PID 2304 wrote to memory of 1404	2304	2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe	misid.exe
PID 2304 wrote to memory of 1404	2304	2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe	misid.exe
PID 2304 wrote to memory of 1404	2304	2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe	misid.exe
PID 2304 wrote to memory of 1404	2304	2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2304

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:1404

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
62KB

MD5
7e202a718f20f65ea8c72ef407919943

SHA1
534914e23c7212c961635d5a3564b7742684f6e1

SHA256
fd48cb7fae6dcb26fa473f5122c25686a5cc7659bdbf8fbff675242ab14660f0

SHA512
a05a419b1fe535ea52ea8b77ab271a1ae57c24e76e51e3a3034ddd52a855dd727e0ab767ceb1b7506e48bc07feff9e5985794969c5cf4b4c3f9700a1244364e9

Download Submit
memory/1404-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1404-24-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1404-17-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2304-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2304-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2304-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2304-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2304-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download